/* css3添加前缀 */

@mixin transition($transition){
	-webkit-transition: $transition;
	-moz-transition: $transition;
	-ms-transition: $transition;
	-o-transition: $transition;
	transition: $transition;
}
@mixin transform-origin($origin){
	-webkit-transform-origin: $origin;
	-moz-transform-origin: $origin;
	-ms-transform-origin: $origin;
	-o-transform-origin: $origin;
	transform-origin: $origin;
}
@mixin scale($scale){
	-webkit-transform: scale($scale);
	-moz-transform: scale($scale);
	-ms-transform: scale($scale);
	-o-transform: scale($scale);
	transform-scale: scale($scale);
}
@mixin opacity($opacity){
	opacity: $opacity;
	filter: alpha(opacity=$opacity * 100);
}